Question about ra or radump

Hi all, my name is Andrey

I try to extract some srcUdata and dstUdata from the argus file using 
radump. I follow from this documentation 
http://qosient.com/argus/man/man1/radump.1.pdf. But it seems the data is 
empty but the file is very big around 600MB. Is there any way or 
configuration from the radump or from argus.conf I missed ?.

Thank you

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